摘 要:證券投資策略一直是廣大投資者關(guān)注的焦點之一。對證券投資策略的研究有助于廣大投資者加深對股票市場的了解,幫助投資者樹立起正確的投資理念和方式。本文以財務(wù)報表的調(diào)整為基礎(chǔ),從基本的財務(wù)數(shù)據(jù)出發(fā),通過對公司自由現(xiàn)金流量的分析和計算,提出了基于自由現(xiàn)金流量的證券投資策略,對我國證券市場進行了動態(tài)實證分析,對持有股票是否具有超額收益率進行顯著性檢驗。實證結(jié)果表明,基于自由現(xiàn)金流量的證券投資策略顯著性地高于市場的收益率。
關(guān)鍵詞:自由現(xiàn)金流量;證券投資;顯著性檢驗;實證分析
中圖分類號:F830.91 文獻標(biāo)識碼:A 文章編號:1003-5192(2011)02-0057-05
Analysis of the Securities Investment Strategy Based on Free Cash Flow
YU Feng, TIAN Yi-xiang, LI Cheng-gang, QI Quan
(School of Economics and Management, University of Electronic Science and Technology of China, Chengdu 610054, China)
Abstract:The securities investment has been the focus of attention of investors in generally. Studying on the securities investment strategy has contributed to deepen understanding of the stock market for large numbers of investors and help investors to establish a correct investment philosophy and approaches. Basing on adjusting financial statement analysis and basic financial ratio, this paper proposes the securities investment strategy based on free cash flow, empirically analyzes stock markets in China, and makes a significance test on the excess rate of return of holding the stock. The results of studying shows that the securities investment strategy based on free cash flow can gains higher rate of return than the market.
Key words:free cash flow; securities investment; significance test; empirically analyze
1 引言
隨著我國證券市場的不斷發(fā)展,越來越多的投資者對證券投資產(chǎn)生了極大的興趣。投資者投資證券的動機是為了獲得未來收益,但是由于未來收益具有很大的不確定性,所以投資者在關(guān)注未來收益時要兼顧收益伴隨的風(fēng)險。由于證券投資時可能會遇到各種風(fēng)險,會給投資者造成損失,因此對證券投資策略進行研究,運用適當(dāng)?shù)耐顿Y策略,規(guī)避風(fēng)險,對投資者來說就顯得十分重要。
證券投資策略是以Markowitz提出的“方差-均值”證券投資組合理論[1]為基礎(chǔ)。各國學(xué)者在Markowitz的基礎(chǔ)上進行了深入探索[2~6] Perold和Andre[7]提出了固定比例投資保險策略,要求投資者根據(jù)自身的風(fēng)險容忍度先決系數(shù)和保險額度進行投資。Buckley等[8]從考察隨機現(xiàn)金流下的指數(shù)跟蹤誤差的角度,分析了投資者導(dǎo)致的脈沖控制問題,并給出了最優(yōu)控制策略。……